2019/07/29 by Joshua Straquadine, J. A. W. Straquadine, J. C. Palmstrom +12 · 6 citations
Materials Science · Physics and Astronomy · #Atmospheric temperature range #Condensed matter physics #Doping #Field (mathematics) #Iron-based superconductors research #Liquid crystal #Magnet #Magnetic field #Materials science #Phase transition #Physics #Physics of Superconductivity and Magnetism #Quantum #Quantum critical point #Quantum mechanics #Quantum phase transition #Rare-earth and actinide compounds #Superconductivity #Thermodynamics #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.100.125147
published in Physical review. B./Physical review. B 100(12) (American Physical Society) · 11 pages, 11 figures
arxiv created 2019/07/29 · openalex publication_date 2019/09/23 · arxiv updated 2019/10/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
In iron-based superconductors, questions surrounding a putative nematic quantum critical point motivate study of the nematic susceptibility at low temperatures. By suppressing superconductivity with pulsed magnetic fields, this work extends the range of elastoresistivity measurements in nearly optimally doped Ba(CoxFe_1\ensuremath-x)2As2 an order of magnitude lower in temperature. The authors show that the nematic susceptibility in the field-induced normal state grows monotonically as temperature decreases. This is consistent with the existence of a nearby quantum critical point with nematic character.